China has poor house price statistics.
The National Bureau of Statistics of China (NBSC) has monthly house price time-series starting January
2011 but only until August of 2013. Another source of house price indices is eHomeday, Shanghai's
largest property market web site, which has time-series for Shanghai, Nanjing, Hangzhou, Beijing,
Yangzhou and Suzhou (but the site is only in Chinese, and no time-series are available).
Colliers International publishes useful housing data in their quarterly property market reviews.
General economics statistics are available from the NBSC and the People's Bank of China.